Holding device for printing blocks or plates



J. C. F. A. .SCHUTTE HOLDING DEVICE FOR PRINTING BLOCKS OR PLATES Filed Jan. 11, 1927 Patented Oct. 18, 1927.

PATENT OFFICE.

JOHANN CARL FRIEDRICH ALBERT SCH'U'TTE, OF BERLIN, GERMANY.

HOLDING DEVICE FOR PRINTING BLOCKS OR PLATES.

Application filed January 11, 1927.

It is already known to attach the printing blocks or plates for book-printing presses on wooden supports by means of small nails, and to attach said supports to the printing block by means of clamps embracing the lower surface of the support and the beveled edges of the printing plate or block.

The present holding device differs from these known devices materially in that the holder is formed as a case or box, and that both side walls of said case or box, which is open at the top, are provided with parallel shoulders, which will engage in corresponding grooves formed in the sides of the printing plate, admitting of the latter to be in troduced and advanced between the said shoulders of the walls of the box. The printing plate will thus close the box, otherwise open at the top. The hollow space in the box can be filled with special filling members, consisting of additional printing plates, in such a manner, that the uppermost printing plate introduced between the shoulders of the side walls and employed for the printing work proper, rests upon the said filling members or printing plates respectively, so that in consequence there will be no hollow space at the back of the printing plate, and bending through of the latter during the printing operation is thus obviated.

This arrangement shows the advantage that in the box-like holding device for the printing plates, several printing plates may be stored simultaneously, for instance for multi-color printing, and at the same time the transport of the printing plates is greatly facilitated.

By way of example an arrangement according to my invention is shown on the drawing, in which Figure 1 is a cross-section of the boxshaped holding device with printing block or plate and several filling members in position;

Figure 2 is a perspective view of the boxshaped holding device with the printing plate removed;

Figure 3 is an elevation of the slide serv ing for closing the box or case; and

Figure 4 is a plan of Figure 3,

Serial No. 160,410.

The box a being open at the top, may consist 'for instance of brass or any other suitable material, and is provided withtwo longitudinal walls 6. Parallel shoulders 0 are provided at the upper end of each of these walls, which shoulders are of wedge-like cross-section. These wedge-shaped shoulders of the walls 6 correspond with angular grooves 03 formedin the'printing plate 6. The latter may be introduced in this manner from the front side between the shoulders a of the walls 6 so that the printing plate 6 after introduction, will form a sliding cover for the box a. In order to fill the empty space of the box, a supporting plate m of wood or metal may be placed beneath the printing plate, and then another intermediate plate 7 of wood or other material. Instead of said plate n a plurality of supporting plates of wood, or even several printing plates can be employed, as this is shown in Figure 1 in dotted lines. On the back of the printing plate e or the supporting plate may be provided the material for making ready blocks in book-printing presses, the com- 1 bination with a box, a printing plate and additional filling elements therein, and an opening provided in the rear transverse wall of the box to facilitate removal of said filling elements, and a slide closing the front side of the box adapted to be removed in an upward direction.

In testimony that I claim the foregoing as my invention, I have signed my name to this specification.

JOHANN CARL FRIEDRICH ALBERT SCHilTTE. 

